Glaus van haagen



(No Model.)

`VAN HAAGEN. MACHINE POR FORGING DRILLS 0R RBAMBRS.

No. 437,841. Patented Oct. '21', 1890.

A el:

inventor:

UNITED STATES PATENT OFFICE.

CLAUS VAN HAAGEN, OF CHESTER, PENNSYLVANIA, ASSIGNOR TO THE CHESTERTWIST DRILL AND TOOL COMPANY, OF SAME PLACE.

MACHINE FOR FORGING DRILLS OR REAMERS.

SPECIFICATION forming part of Letters Patent No. 437,841, dated October'7, 1890.

Application tiled January 28, 1890l Serial No. 338,373. (No model.)

To all whom it may concern:

Be it known that I, CLAUS VAN HAAGEN, of Chester, in the county ofDelaware and State of Pennsylvania, have invented an Improvement inMachines for Forging Drills and Beamers, of which the following is aspecitication.

My invention has reference to machines for the manufacture of drills andreamers; and it consists of certain improvements which are fully setforth in the following specification and shown in the accompanyingdrawings, which form a part thereof.

More particularly my invention relates to an improvement upon themachine set out in Letters Patent No. 296,254, granted to me on April l,1884i. In the said patent the drillrod Was fed forward between theforging-dies by suitable mechanism which was operated by hand, andlikewise the rotation imparted to the chuck for insuring the groovebeing made spiral was also performed by hand, the

said movements being imparted from the same hand-wheel and having apreviously-determined relation to each other, so that for a givenforward movement of the chuck a corresponding rotary movement was alsoimparted thereto. The objection to this method of operation was that itrequired the constant attendance of a skilled operator at the handwheeland necessitated considerable care to avoid irregular feeding of thedrillrod through the dies. If the feeding was irregular the duty uponthe dies would also be irregular and with liability to produce defectiveWork and at the same time produce excessive wear and irregular strainupon the hammer-dies. As the hammendies strike the drill-rod at a veryhigh rate, imparting a large number of strokes per minute, it will beapparent that the feeding-movement should also be as many times repeatedper minute, and it is clear that automatic mechanism controlled by themovement of the dies or other moving part of the machine would be farmore reliable than hand manipulation.

The object of my invention is to overcome the necessity of employinghand labor for this feeding of the drill-rod through the dies, andinstead to employ mechanism automatically operated and controlled by themovedrill-rod and impart to it the necessary forward and rotary movementto insure the proper feeding of the drill-rod for any given number ot'strokes of the dies.

The mechanism for carrying out my invention will be better understood byan examination of the accompanying drawings, in which- Figure l is asectional elevation vthrough my improved drill-forging machine. Fig. 2is a perspective view showing the mechanism between the dies and thebrake of the feeding mechanism. vation of the left-hand portion of Fig.l, but taken on a plane through the shafts I and Z of that figure; andFiga is a cross-section ou line x of part of Fig. l.

It will not be necessary for me to describe the details of theforging-machine beyond that which is necessary for disclosing my presentinvention, as the details of the machine are fully set out in my patentabove referred to.

B represents the dies,which maybe formed of any suitable constructionand operated in any suitable manner, so as to be relatively reciprocatedto and from each other while forging the drill. The upper die is securedto a vertically-reciprocating frame C, which is operated by eccentricsand cams, as fully disclosed in my aforesaid patent.

A is the main frame of the machine.

D is a chuck for holding the rod to be forged into a drill or reamer,and said chuck is carried indirectly by a frame Cr, which slides uponthe main frame A, and made adjustably to or from the dies B by means ofthe pinion and rack Q. The chuck D is secured to a hollow shaftl J,which is provided with an external screwthread c, working through a nutor sleeve D, having gear-teeth f, Which mesh with the pinion H upon theshaft I. These several parts are supportedby the frame G. By rotatingthe shaft I the nut E is rotated, and this feeds the chuck D forward orbackward with respect to the dies, according as to whether the shaftIisrotated in one direction or the other. The tube E is connected with theshaft .I by means of a ment of the dies or their operating parts, whichshall act upon the chuck holding the Fig. 3 is a sectional ele-v IOOspline or feather, or other suitable device, as set out in my patentaforesaid, the connection being such that when the shaft-is rotated thetube E and its chuck D are rotated also, but at the same time arepermitted to have an independent longitudinal movement due to the actionof the revolving nut F. This spline connection is clearly shown in Fig.4. f

The shaft J is provided with a Worm-wheel 1o j, with which meshes a wormshownin dotted lines at K, and secured to a sha-ft 7c. This shaft 7c isconnected with a short shaft Z by means of bevel-gearing L.- Arranged inline with this shaft Z is a separate shaft Z', and these shafts areprovided with spur-wheels M M', respectively, and said spur-wheels areconnectedby means of the pinions m and the shaft I. It will thus be seenthatif the shaft Z.' vis rotated the shaft Z will be rotated also and inthe same d-irection, and by means of the bevel-wheels L and worm K willimpart to the shaft J a corresponding` rotation. Simultaneously withthis rotation of the shaft J a rotation of the nut or sleeve F will begiven by the pinion H and the shaft I, which latter is rotated throughthe mediation of the pinions m. This combined act-ion induces the chuckD to be fed forward with respect to the dies, and simultaneouslytherewith to have imparted to it a given rotation corresponding to thespiral groove to be formed in the drill. By changing the diameter of thewheels M and m it is evident that with a given forward feeding of thechuck the rota# tion thereof may be increased or decreased for producingspiral grooves having different pitches. The shaft Z' is secured to asleeve N, having a flange n, upon which is clamped a driving-pulley O.The construction of this driving-pulley and its connection with thesleeve is best shown in Fig. 8, and consists, essentially, of two parts,one of which is journaled upon the sleeve and the other of whichconsists of a face-plate P, which is clamped by means of bolts pagainstaleather or other packing o, which is pressed against the face yof the flange fn. If desired, there may be an additional packingorfriction ring o upon the opposite face of the flange n, as shown. Itwill thus be seen that any degree of friction desired may be obtained,so that the rotation of the driving-pulley O will create a tendency moreor less to rotate the sleeve N.

The sleeve N is secured to the shaft Z', so that the tendency to rotatesaid sleeve is imparted to thek shaft Z' also. Encircling the sleeve isa friction-band N', which acts as a brake to arrest the said sleeve atgiven periods 'corresponding to the time when the dies are forging thedrill-rod. This friction-band N is operated by suitablevmechanismconnecting with the devices which operate the dies, or with any otherportions of the machine having movements corresponding to thereciprocations of said diesb In practice I prefer to connect themechanism -for operating the frictiomband with thevertically-reciprocating portion C for moving the upper die B, and thismechanism is best shown in Fig. 2. It consists of a lever C, having oneend connected to the frame C by a link b, and its other end connected toa telescopic shaftR by a crank r and a link d. The telescopic shaft R isprovided with a cross-arm S, the lower end of whichis connected by linkt with the lower end of a pivoted arm T. Arranged between one end of thebrake or friction band N' and the upperend of the arm S is a rod U, andbetween thek other end ofthe friction-band and adjust- 'ing-screw W onthe arm .T is a second rod U. The screw \V may be adjusted to compensatefor any wear upon the friction-band. The

parts T and S form levers of different orders,

and by their connection through the link t are so operated by therotation of the shaft R that they act upon the ends of the brakeband inopposite directions, so as to clam-p or release the sleeeve for allowingintermittent rotation thereof. l

The telescopic construction is employed so as to permit the frame G tobe moved to or from the dies and with it the friction-brake mechanismand yet at all times maintain an operative connection between the partsC and S.

If the friction-band were not employed, then the constant rotation ofthe band-wheel O would cause a tendency to a constant forward and spiralmovement to the drill-rod, and this would necessitate the intermittentarresting of the motion by the action of thedies upon the drill-rod,which would be unreliable and apt to produce poor work; but by myconstruction the mechanism which acts to forge the drill simultaneouslywith the gripping of the drill-rod arrests the rotation of the sleeve N,allowing the pulley-wheel 0 to slip through its friction-connection withthe flange fn. It will thus be seen that for every one of thereciprocations of the frame C and its die there will be a correspondinggripping and releasing of the sleeve N by the brake-band N',

thus insuring a very large number of intermittent feeding movements ofthe drill-rod per minute. Itis clear that there are many ways ofmodifying the details of the mechanism for accomplishing this object;hence Ido notlimit myself-to the specific constructions herein set out,my invention comprehending in a machine of this class mechanism, broadlyconsidered, connecting between the feeding mechanism for the drill-rodand the moving parts of the machine for performing the forgingoperation, whereby the drillrod is vfed foi'-,

ward intermittently with a number of movements corresponding to themovement ofthe IOO IIO

dies, so that when the dies are away from thedrill-rod the feedingaction thereto is imparted.

Having now described my invention, whatI4 claim as new, and desire tosecure by Lettersv l. In a machine for forging drills or reameers, thecombination of one or more reciprocating forging-dies, a chuck or holderfor the drill-rod adapted to be moved to or from the said dies, powerdevices for feeding said chuck to or from the said dies, andintermediate mechanism between the reciprocating die and the powermechanism for the chuck, whereby the movement of the chuck is controlledby the movement of the dies or other operating parts.

2. In a machine for forging drills or reamers, the combination of one ormore reciprocating dies, a chuck or holder for the drill or reamer rodadapted to be moved to or from the dies, feeding devices for said chuckto move it to or from the dies, power devices to operate the feedingdevices, and a friction power-transmitting device arranged between thepower devices and feeding devices for the chuck.

3. In a machine for forging drills or reamers, the combination of one ormore reciprocating dies, a chuck or holder for the drill or reanier rodadapted to be moved to or from the dies, feeding devices for said chuckto move it to or from the dies, power devices to operate feedingdevices, friction-transmitting devices between the power and feedingdevices for the chuck, a brake to intermittently arrest the movement ofthe feeding devices, and connecting mechanism between the dies and thebrake, whereby the latter is intermittently applied for each action ofthe dies in forging the drill or reamer.

4. In a machine for forging drills or reamers, the combination of one ormore reciprocating dies, a chuck adapted to be moved to or from the diesand at the same time rotated, feeding devices for feeding the chuck toor from the dies and also rotating the same, a power-wheel for impartingmotion to the feeding devices, afriction device arranged between thepower-wheel and feeding devices, and a brake adapted to arrest themovement of the feeding devices operated by the dies or theirconnections.

5. In a machine for forging drills or reamers, the combination of one ormore reciprocating dies, a chuck adapted to be moved to or from the diesand at the same time rotated, feeding devices for feeding the chuck toor from the dies and also rotating the same, a power-wheel for impartingmotion to the feeding devices, a brake adapted to arrest the movement ofthe feeding devices operated by the dies or their connections consistingof a sleeve secured to the shaft of the feeding mechanism, an encirclingfriction-band for said sleeve, a rockshaft, and connections for clampingor releasing the said friction-band, and lever-connections between therock-shaft and moving dies or their connections.

6. The combination, in a machine for forging drills or reamers, of oneor more of the reciprocating dies with a chuck movable to and from saiddies, devices for moving said chuck to or from said dies, aconstantly-1'0- tating poWer-wheel,a friction device interposed betweenthe power-wheel and feeding devices for the chuck, and means controlledby the movement of the dies or their operatingv parts for intermittentlyarresting the movement of the feeding devices without in terfering withthe rotation of the powerwheel.

In testimony of which. invention I hereunto set my hand.

CLAUS VAN HAAGEN.

Witnesses:

ERNEST HOWARD HUNTER, S. T. YERKEs.

